1103030502

SubArea: 
Points and vectors
Level: 
B
Project ID: 
1103030502
Accepted: 
1
Clonable: 
0
Easy: 
1
Find the coordinates of the vectors \( \overrightarrow{u} \) and \( \overrightarrow{v} \) given by the picture and evaluate their dot product.
\( \overrightarrow{u}=(-3;6);\ \ \overrightarrow{v} =(-9;-6);\ \ \overrightarrow{u}\cdot\overrightarrow{v} = -9 \)
\( \overrightarrow{u}=(3;-6);\ \ \overrightarrow{v} =(9;6);\ \ \overrightarrow{u}\cdot\overrightarrow{v} = -9 \)
\( \overrightarrow{u}=(-3;6);\ \ \overrightarrow{v} =(-9;-6);\ \ \overrightarrow{u}\cdot\overrightarrow{v} = 9 \)
\( \overrightarrow{u}=(3;-6);\ \ \overrightarrow{v} =(9;6);\ \ \overrightarrow{u}\cdot\overrightarrow{v} = 0 \)